Dashi was second wife or concubine to Araki Murashige (more likely concubine, since she was not the mother of his heir, Araki Muratsugu). She was also 20+ years younger than him.

When Murashige rebelled against Oda Nobunaga in 1578, Dashi was taken prisoner when Arioka Castle surrendered to Oda's siege. Thereafter Dashi was escorted to Kyoto along with 36 other members of Murashige's family and executed at Rokujou-gawara on Jan. 2, 1580. The Nobunaga Official Chronicles states:

She re-tightened her obi, brushed her hair up, and spread the collar of her garment. Then she sat and bowed to the earth of her execution ground before putting her hands together in prayer and submitting to her decapitation.

Dashi was called a peerless beauty and a modern-day Yang Guifei in the Nobunaga Official Chronicles and the Tateri Sakyounosuke Fujiwara Munetsugu Nyuudouryuusa no Ki. Her age is given either as 21 or 24 in the two records.

Three days before Dashi's death, 122 hostages from the Araki Clan were tied to posts and stabbed to death at Seven Pines near Amagasaki Castle. A further 512 hostages were crammed into 4 houses and burned alive.